class Person {
    constructor(name, age) {
        this.name = name
        this.age = age
    }

    running() {
        console.log(this.name + "running")
    }
}

class Student extends Person {
    constructor(name, age, sno) {
        super(name, age)
        this.sno = sno
    }

    studying() {
        console.log(this.name + "studying")
    }

}



function _typeof(obj) {
    "@babel/helpers - typeof";
    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
        _typeof = function _typeof(obj) {
            return typeof obj;
        };
    } else {
        _typeof = function _typeof(obj) {
            return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
        };
    }
    return _typeof(obj);
}

function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
        throw new TypeError("Super expression must either be null or a function");
    }
    subClass.prototype = Object.create(superClass && superClass.prototype, {
        constructor: {
            value: subClass,
            writable: true,
            configurable: true
        }
    });
    //目的方法：静态方法的继承
    if (superClass) _setPrototypeOf(subClass, superClass);
}

function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
        o.__proto__ = p;
        return o;
    };
    return _setPrototypeOf(o, p);
}

function _createSuper(Derived) {
    var hasNativeReflectConstruct = _isNativeReflectConstruct();
    return function _createSuperInternal() {
        var Super = _getPrototypeOf(Derived),
            result;
        if (hasNativeReflectConstruct) {
            var NewTarget = _getPrototypeOf(this).constructor;
            result = Reflect.construct(Super, arguments, NewTarget);
        } else {
            result = Super.apply(this, arguments);
        }
        return _possibleConstructorReturn(this, result);
    };
}

function _possibleConstructorReturn(self, call) {
    if (call && (_typeof(call) === "object" || typeof call === "function")) {
        return call;
    } else if (call !== void 0) {
        throw new TypeError("Derived constructors may only return object or undefined");
    }
    return _assertThisInitialized(self);
}

function _assertThisInitialized(self) {
    if (self === void 0) {
        throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }
    return self;
}

function _isNativeReflectConstruct() {
    if (typeof Reflect === "undefined" || !Reflect.construct) return false;
    if (Reflect.construct.sham) return false;
    if (typeof Proxy === "function") return true;
    try {
        Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
        return true;
    } catch (e) {
        return false;
    }
}

function _getPrototypeOf(o) {
    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
        return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
}

function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
        throw new TypeError("Cannot call a class as a function");
    }
}

function _defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
        var descriptor = props[i];
        descriptor.enumerable = descriptor.enumerable || false;
        descriptor.configurable = true;
        if ("value" in descriptor) descriptor.writable = true;
        Object.defineProperty(target, descriptor.key, descriptor);
    }
}

function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
}

var Person = /*#__PURE__*/ function () {
    function Person(name, age) {
        _classCallCheck(this, Person);

        this.name = name;
        this.age = age;
    }

    _createClass(Person, [{
        key: "running",
        value: function running() {
            console.log(this.name + "running");
        }
    }]);

    return Person;
}();

var Student = /*#__PURE__*/ function (_Person) {
    //实现之前的寄生式继承的方法（静态方法的继承）
    _inherits(Student, _Person);

    var _super = _createSuper(Student);

    function Student(name, age, sno) {
        var _this;

        _classCallCheck(this, Student);

        _this = _super.call(this, name, age);
        _this.sno = sno;
        return _this;
    }

    _createClass(Student, [{
        key: "studying",
        value: function studying() {
            console.log(this.name + "studying");
        }
    }]);

    return Student;
}(Person);

// 一定不要浮躁
//  看到后面忘记前面
//  读一个函数的时候忘记传进来是什么？
// 当读完一个函数还是不知道它要干嘛
// debugger